[chore] update database caching library (#1040)

* convert most of the caches to use result.Cache{}

* add caching of emojis

* fix issues causing failing tests

* update go-cache/v2 instances with v3

* fix getnotification

* add a note about the left-in StatusCreate comment

* update EmojiCategory db access to use new result.Cache{}

* fix possible panic in getstatusparents

* further proof that kim is not stinky

vendor/codeberg.org/gruf/go-cache/v3/README.md

@@ -0,0 +1,17 @@
+# go-cache
+
+Provides access to a simple yet flexible, performant TTL cache via the `Cache{}` interface and `cache.New()`. Under the hood this is returning a `ttl.Cache{}`.
+
+## ttl
+
+A TTL cache implementation with much of the inner workings exposed, designed to be used as a base for your own customizations, or used as-is. Access via the base package `cache.New()` is recommended in the latter case, to prevent accidental use of unsafe methods.
+
+## lookup
+
+`lookup.Cache` is an example of a more complex cache implementation using `ttl.Cache{}` as its underpinning. It provides caching of items under multiple keys.
+
+## result
+
+`result.Cache` is an example of a more complex cache implementation using `ttl.Cache{}` as its underpinning.
+
+It provides caching specifically of loadable struct types, with automatic keying by multiple different field members and caching of negative (error) values. All useful when wrapping, for example, a database.